Sorry, but no Text Walkthrough for this one. The first thing is that I would have to explain alot, and the second this is that I would spoil the fun! This game should be solved by everyone on their own, because this game is so fun, easy and creative made, that you should have all the fun ;)

Take each of the 4 blocks out of the pit. The one that has a weird shaped L, put it in first so it looks like this: ^. Drag the ones that have no end to the top right and left. Put the last piece on the top.